1. The problem statement, all variables and given/known data express the given expression in simplest form with only possitive exponents 2. Relevant equations **refer to attached drawing** 3. The attempt at a solution Refer to attached drawing to see my attempt and to see what the real answer is. I dont understand where i went wrong in my steps, in the final answer there is a (-4n) i dont know where that came from. Greatly appreciated if one of you smart guys could lend us a hand. Thank you.